Final answer:
Decomposers in a food chain or food web recycle dead organic matter and release nutrients into the ecosystem.
Step-by-step explanation:
Decomposers play a vital role in the food chain or food web by recycling dead organic matter and releasing nutrients into the ecosystem. They break down the remains of dead plants and animals, such as fallen leaves and animal carcasses, into simpler substances. This process, known as decomposition, releases essential nutrients like carbon, nitrogen, and phosphorus back into the soil or water, making them available for other organisms to use.
For example, earthworms are decomposers that consume decaying organic matter, digest it, and excrete nutrient-rich waste called castings. These castings contain minerals and nutrients that can be absorbed by plants, aiding in their growth. Fungi, such as mushrooms, also act as decomposers by breaking down dead organic material.
Without decomposers, dead organic matter would accumulate, and nutrients would become trapped, leading to a decrease in available resources for other organisms in the ecosystem.
Learn more about Decomposers in food chains and food webs